A Digital Cross-Connect System for Digital Data Circuits

Author

Kretsch, Kenneth P. ; Morrison, Dennis A.

Author_Institution

AT&T Bell Labs., Ward Hill, MA, USA

Volume

5

Issue

1

fYear

1987

fDate

1/1/1987 12:00:00 AM

Firstpage

26

Lastpage

32

Abstract

The AT&T subrate data cross-connect system (SRDC) brings the capabilities of the digital access and cross-connect system (DACS) used primarily for analog circuits to the digital data world, including the capability of mechanized remote provisioning and maintenance. The SRDC performs DACS-equivalent functions on 64 kbit/s channels of the Digital Data System (DDS) and other similar emerging data networks at the 2.4, 4.8, 9.6, and 56 kbit/s rates. An SRDC-equipped DACS frame can process both voice and digital data in a shared arrangement. It can also provide all the functions necessary for a DDS hub office environment, including subrate multiplexing, multipoint functions, dataport error correction and secondary channel processing. The operational functions supported by SRDC include circuit testing, facility performance monitoring, circuit and equipment provisioning, memory administration, and equipment maintenance.

Keywords

Communication switching; Data communications; Switching, communication; Analog circuits; Circuit testing; Costs; Data communication; Data systems; Error correction; Helium; Monitoring; Switching circuits; System testing;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/JSAC.1987.1146508

Filename

1146508